Persist pushdown hardening - #38096

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def-:persist-pushdown-hardening

Commits on Aug 7, 2026

repr: check the kind tag when decoding fixed-size column stats

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a04e3f4
repr: validate V0 column stats instead of panicking on them

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16740ac
storage-types: treat missing err stats as may-error in may_match_mfp

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7857714
persist: fail open when part stats do not decode

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cc79d0c
storage-types: treat malformed err stats as unknown err count

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bcf55e9
repr, persist: guard the latent filter pushdown invariants

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494d9d3
storage: audit error rows in wrongly-discarded parts

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0b822c5
storage-types, expr, repr: systematic filter pushdown test coverage

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66f424d
expr: document why range_lower's monotone claim survives its NULLs

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895d19b
storage-types: don't underflow err_count on corrupt ok counts

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32e48e3
expr, cargo-fuzz: address review nits

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2cf0894